Vehicle Charging Parameter Tuning via Authenticated XCP Charger

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Solution Overview

Problem

Existing vehicle charging systems face challenges in automatically tuning vehicle charging module parameters to align with the characteristics of various external chargers, due to limited resources and lack of standardized protocols for parameter tuning.

Innovation Solution

An automatic tuning system and method that utilizes an authenticated external charger to communicate with a vehicle charging module using the XCP protocol, allowing for secure authentication and parameter tuning of the vehicle charging module symbols.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Extent of automation

If the vehicle attempts to automatically tune charging parameters using its own resources, then parameter tuning capability is improved, but the vehicle's limited resources are overwhelmed and tuning fails

Engineering Contradiction:

Improveautomatic parameter tuning capabilityVSAvoidvehicle controller resource requirements

Core Design Contradiction:

Extent of automationVSDevice complexity

Solution Approach 1:

Instead of having the vehicle (slave) perform parameter tuning, the external charger (master) performs the tuning operation. The vehicle controller only needs to receive commands and execute simple operations, while the computationally intensive parameter tuning is offloaded to the external charger's more powerful processing resources.

Inventive Principle:

Principle #13The other way round (Inversion)

Solution Approach 2:

The XCP protocol serves as an intermediary standard that enables communication and parameter tuning between the external charger and vehicle charging module. This standardized interface allows the external charger to access and modify vehicle parameters without requiring complex custom integration logic in the vehicle controller.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Productivity

If the external charger attempts to directly control vehicle charging parameters, then charging efficiency is improved, but security risks increase due to lack of authentication

Engineering Contradiction:

Improvecharging efficiencyVSAvoidsystem security

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

Authentication is performed before any parameter tuning or charging operation. The external charger and vehicle controller exchange authentication credentials and verify each other's identity in advance, ensuring that only authorized devices can access and modify charging parameters.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The XCP protocol provides a standardized communication framework that mediates all interactions between the external charger and vehicle controller. This standardized interface ensures secure, controlled access to vehicle parameters while maintaining system reliability and preventing unauthorized modifications.

Inventive Principle:

Principle #24Intermediary (Mediator)

Data Source

PatentUS20250187475A1Automatic tuning system and method for vehicle charging parameters

Publication Date: 2025.06.12 HYUNDAI AUTOEVER

AI summary

Automatic tuning systems and methods for vehicle charging parameters are described. According to one embodiment, a system comprises a vehicle charging module configured to perform charging of a vehicle according to parameter values set in symbols related to the charging and an external charger configured to communicate with the vehicle charging module to perform charging and to automatically tune the parameter values set in the symbols related to the charging.